'use strict';
const path = require('path');
const pages = require('./webpack/pagesConfig');

function resolve(dir) {
  return path.join(__dirname, dir);
}

// const name = defaultSettings.title || '渠道版集成Demo'; // page title

// If your port is set to 80,
// use administrator privileges to execute the command line.
// For example, Mac: sudo npm run
// You can change the port by the following methods:
// port = 9528 npm run dev OR npm run dev --port = 9528
const port = process.env.port || process.env.npm_config_port || 9527; // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  pages,

  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: process.env.PUBLIC_PATH || '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: process.env.NODE_ENV === 'development',
  productionSourceMap: false,
  devServer: {
    port,
    open: true,
    disableHostCheck: true,
    overlay: {
      warnings: false,
      errors: true,
    },
    historyApiFallback: {
      rewrites: [
        { from: /^\/m/, to: '/m/index.html' },
        { from: /./, to: '/index.html' },
      ],
    },
    before: (...args) => require('./server/init.js')(...args),
  },
  css: {
    loaderOptions: {
      postcss: {
        plugins: [
          require('postcss-plugin-px2rem')({
            rootValue: 75,
            exclude: /(node_modules)|src\/pc\//,
            mediaQuery: false,
            minPixelValue: 3,
          }),
        ],
      },
    },
  },
  configureWebpack: {
    // provide the app's title in webpack's name field, so that
    // it can be accessed in index.html to inject the correct title.
    // name,
    resolve: {
      alias: {
        '@common': resolve('src/common'),
        '@': resolve('src/pc'),
        '@h5': resolve('src/h5'),
      },
    },
    // plugins: [...htmlPlugins],
  },
  chainWebpack(config) {
    // config.plugins.push(htmlPlugins);
    // it can improve the speed of the first screen, it is recommended to turn on preload
    // config.plugin('preload-index').tap(() => [
    //   {
    //     rel: 'preload',
    //     // to ignore runtime.js
    //     // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
    //     fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
    //     include: 'initial',
    //   },
    // ]);

    // when there are many pages, it will cause too many meaningless requests
    config.plugins.delete('prefetch');

    // set svg-sprite-loader
    config.module.rule('svg').exclude.add(resolve('src/pc/icons')).end();
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/pc/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]',
      })
      .end();

    config.optimization.splitChunks({
      chunks: 'all',
      cacheGroups: {
        libs: {
          name: 'chunk-libs',
          test: /[\\/]node_modules[\\/]/,
          priority: 10,
          chunks: 'initial', // only package third parties that are initially dependent
        },
        elementUI: {
          name: 'chunk-elementUI', // split elementUI into a single package
          priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
          test: /[\\/]node_modules[\\/]_?element-ui(.*)/, // in order to adapt to cnpm
        },
        commons: {
          name: 'chunk-commons',
          test: /[\\/]src\/common[\\/]/, // can customize your rules
          priority: 5,
          reuseExistingChunk: true,
        },
      },
    });

    config.when(process.env.NODE_ENV !== 'development', config => {
      config
        .plugin('ScriptExtHtmlWebpackPlugin')
        .after('html')
        .use('script-ext-html-webpack-plugin', [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/,
          },
        ])
        .end();
    });
  },
};
